ES470867A1 - Perfeccionamientos en adaptadores telefonicos electroacus- ticos - Google Patents

Perfeccionamientos en adaptadores telefonicos electroacus- ticos

Info

Publication number
ES470867A1
ES470867A1 ES470867A ES470867A ES470867A1 ES 470867 A1 ES470867 A1 ES 470867A1 ES 470867 A ES470867 A ES 470867A ES 470867 A ES470867 A ES 470867A ES 470867 A1 ES470867 A1 ES 470867A1
Authority
ES
Spain
Prior art keywords
path
telephone adapter
earpiece
electroacoustical
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES470867A
Other languages
English (en)
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPANEL ABRAM NATH
Original Assignee
SPANEL ABRAM NATH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SPANEL ABRAM NATH filed Critical SPANEL ABRAM NATH
Publication of ES470867A1 publication Critical patent/ES470867A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/21—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads
    • H04M1/215—Combinations with auxiliary equipment, e.g. with clocks or memoranda pads by non-intrusive coupling means, e.g. acoustic couplers
ES470867A 1977-06-16 1978-06-16 Perfeccionamientos en adaptadores telefonicos electroacus- ticos Expired ES470867A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/807,104 US4115659A (en) 1977-06-16 1977-06-16 Electroacoustical telephone adapter

Publications (1)

Publication Number Publication Date
ES470867A1 true ES470867A1 (es) 1979-02-01

Family

ID=25195585

Family Applications (1)

Application Number Title Priority Date Filing Date
ES470867A Expired ES470867A1 (es) 1977-06-16 1978-06-16 Perfeccionamientos en adaptadores telefonicos electroacus- ticos

Country Status (21)

Country Link
US (1) US4115659A (no)
JP (1) JPS605101B2 (no)
AR (1) AR215716A1 (no)
AU (1) AU517959B2 (no)
BE (1) BE868153A (no)
BR (1) BR7803853A (no)
CA (1) CA1105630A (no)
CH (1) CH633925A5 (no)
DE (1) DE2826345C2 (no)
DK (1) DK266778A (no)
ES (1) ES470867A1 (no)
FI (1) FI781923A (no)
FR (1) FR2394943A1 (no)
GB (1) GB2000665B (no)
MX (1) MX144953A (no)
NL (1) NL7806549A (no)
NO (1) NO150300C (no)
NZ (1) NZ187578A (no)
PT (1) PT68175A (no)
SE (1) SE430367B (no)
SG (1) SG45782G (no)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3009404A1 (de) * 1980-03-12 1981-09-17 Philips Patentverwaltung Gmbh, 2000 Hamburg Vorrichtung zum einstellen eines bewegbaren elektroakutischen schallwandlers
EP0050899A1 (en) * 1980-10-27 1982-05-05 CISE- Centro Informazioni Studi Esperienze S.p.A. Device for the transmission and receipt of signals through a telephone line
CA1181541A (en) * 1982-05-21 1985-01-22 Mitel Corporation Loudspeaking telephone
US4493950A (en) * 1982-12-17 1985-01-15 Lott Thomas M Loudspeaker telephone
US4497980A (en) * 1983-06-16 1985-02-05 Itt Corporation Handsfree circuit for telephone instrument
AU610071B2 (en) * 1986-06-30 1991-05-16 Anthony Forbes Telephone on-hold device
DE3843033A1 (de) * 1988-12-21 1990-06-28 Messerschmitt Boelkow Blohm Mikrofon hoher empfindlichkeit
US5491695A (en) * 1991-07-17 1996-02-13 Digital Access Corporation Means and method of dial up bridging of network for high bandwidth digital communication
US5701347A (en) * 1994-06-23 1997-12-23 Compaq Computer Corporation Audio system for a personal computer
US6501836B1 (en) 1994-09-09 2002-12-31 Compaq Computer Corporation Audio system for a personal computer
US5633943A (en) * 1994-09-09 1997-05-27 Compaq Computer Corporation Audio system for a personal computer
US5828730A (en) 1995-01-19 1998-10-27 Sten-Tel, Inc. Method and apparatus for recording and managing communications for transcription
GB0024350D0 (en) * 2000-10-05 2000-11-22 Mitel Corp Use of handset microphone to enhance speakerphone loudspeaker performance
GB0315426D0 (en) * 2003-07-01 2003-08-06 Mitel Networks Corp Microphone array with physical beamforming using omnidirectional microphones

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580439A (en) * 1949-09-07 1952-01-01 Bell Telephone Labor Inc Directional acoustic system
US2987575A (en) * 1955-11-10 1961-06-06 Norman L Chalfin Two way telephone handset amplifying system
US3189690A (en) * 1960-04-27 1965-06-15 Modern Telephones Great Britai Two-way telephone systems with talk-listen switching
US3725585A (en) * 1972-03-21 1973-04-03 Itt Loudspeaking telephone station circuit
DE2247097C3 (de) * 1972-09-26 1979-01-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Sprachgesteuerte Lautfernsprechanlage
DE2260401A1 (de) * 1972-12-09 1974-06-12 Zielinski Adolf Herbert Telefonadapter
US3887771A (en) * 1974-03-04 1975-06-03 Spanel Abram Nathaniel Telephone adapter
US4079196A (en) * 1976-03-16 1978-03-14 Abram Nathaniel Spanel Telephone control apparatus

Also Published As

Publication number Publication date
AR215716A1 (es) 1979-10-31
AU3712078A (en) 1979-05-03
BE868153A (fr) 1978-12-15
BR7803853A (pt) 1979-04-10
CA1105630A (en) 1981-07-21
FI781923A (fi) 1978-12-17
MX144953A (es) 1981-12-04
NZ187578A (en) 1981-10-19
NO782065L (no) 1978-12-19
GB2000665A (en) 1979-01-10
JPS605101B2 (ja) 1985-02-08
US4115659A (en) 1978-09-19
GB2000665B (en) 1982-04-21
FR2394943A1 (fr) 1979-01-12
NL7806549A (nl) 1978-12-19
NO150300C (no) 1984-09-19
NO150300B (no) 1984-06-12
AU517959B2 (en) 1981-09-03
DK266778A (da) 1978-12-17
SE430367B (sv) 1983-11-07
PT68175A (en) 1978-07-01
DE2826345A1 (de) 1979-01-04
DE2826345C2 (de) 1984-05-17
CH633925A5 (fr) 1982-12-31
SG45782G (en) 1983-07-08
SE7806809L (sv) 1978-12-17
JPS5417605A (en) 1979-02-09

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990405